Rosette-cutting bit



No. 6I5,25l. Patented Dec. 6, I898. A. W. COOPER.

ROSETTE CUTTING BIT.

(Application filed May 3, 1898.)

(No Model.)

NITED STATES 10* FFI-oE.

PATENT ALFRED w. COOPER,- OF JUMPING BRANCH, WEST VIRGINIA, AssIeNoR orONE-HALF'TO JAMES H. MILLER, OF HINTON, WEST VIRGINIA.

ROSETTE-CUTTING BIT.

SPECIFICATION forming part of Letters Patent No. 615,251, dated December6, 1898. V

Application filed May 3, 1898. Serial No. 679,607. (No model.)

To all whom it may concern.-

Be it known that I, ALFRED W. COOPER,.a citizen of the United States,residing at J umping Branch, in the county of Summers and State of WestVirginia, have invented a new and useful Rosette-Cutting Bit, of whichthe following is a specification.

This invention relates to that class of woodworking implementsdesignedto bore or cut rosettes or corner-pieces, the object of theinvention being to generally improve the con-' struction and operationof such devices,whereby the manufacture of rosettes will be facilitatedand a better smoother class of work turned out. I

With this object in view my invention consists in a rosette-cutting bitfor use with a hand-brace or upon a woodworking-machine, comprising astem which in the hand-working device is fitted into the chuck of thebit and which in the machine-working device is fitted in the end of arapidly-rotating shaft, said stem being slotted at its outer end toreceive a cutting-bit of peculiar construction secured in the slot bynovel means, substantially as hereinafter fully described and afterwardspecifically pointed out in the claims.

In order to enable others skilled in the art to which my invention mostnearly appertains to make and use the same, I will now proceed todescribe its construction and operation, reference being had to theaccompanying drawings, forming part of this specification, in whichFigure 1 is a perspective view illustrating the rosette-cutting bitconstructed in accordance with my invention. Fig. 2 is a central sectionthrough the same, the upper end of the stem being broken away. Fig. 3 isa section taken on the plane indicated by the broken line 3 3 of Fig. 2.Fig. 4t is a detail perspective view of the bit or cutter removed fromthe stem. Fig. 5 is a plan view on a reduced scale of a rosetteor'corner-piece produced by the operation of my invention.

Like letters of reference mark the same parts wherever they occurthroughout the various figures of the drawings.

Referring to the drawings by letters, A indicates the stem, which isillustrated as being provided with an angular end B to fit in the chuckof a hand-brace; but it will be understood that when the bit is to beused upon a machine the stem A will be properly constructedto be coupledor clutched to the end of the cutter-shaft of the machine. The forwardend of the stem A is notched, forming a recessto receive the centralportion 0 of the bit E, the .inner wall of the notch or recess beingdiagonally grooved and one side of thecentral portion C of the bit beingprovided with a like diagonal groove D, which when the bit is placed ina recess in'the end of the stem will register with the diagonal groovein the inner wall ofthe recess of the stem and form a diagonal socket toreceive a bar E,

the cutting edges and smoothing-surfaces being arranged upon oppositesides of the point F at .proper distances, whereby the cut made by thecutting edges G and H during the rotation of the bit will be continuallysmoothed by the inclined curved smoothing-surfaces I and J, asdescribed; The bar E may be secured in the diagonal socket by means of apin K, and a pin or screw L (shown in dotted lines in Fig. 3) passesthrough one side of the stem into the central portion 0 of the bit.

The construction and operation of my invention will be readilyunderstood from the foregoing, and while I have illustrated anddescribed in detail What I now consider to be the best means forcarrying out my invention I do not wish to be understood as restrictingmyself to the exact forms and constructions shown, but hold that anyslight variation therefrom, such as might suggest itself to the ordinarymechanic, would properly fall within the limit and scope of myinvention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is-

1. A rosette cutting bit provided with curved cutting edges on one sideof the center and curved inclined rubbing or smooth-- ing surfacescorrespondingly located upon the opposite side of the center, incombination with a stem recessed in its outer end to receive the bit,and means for securing it therein, substantially as described.

2. The combination with the stem A provided with the end recess havingthe inclined groove in one wall thereof, with the cutter E provided withthe central portion C to enter said recess and with the inclined grooveD registering with the inclined groove in the Wall of the recess in thestem A'and forming an inclined socket, and the inclined bar E seated insaid socket and provided with a projecting point F, substantially asdescribed.

3. The combination with the stem A pro Vided with the end recess, thebit E formed with curved cutting edges G and H, inclinedsmoothing-surfaces I and J and a central p01 tion 0 to enter the recessin the stem A, the inner Wall of the recess of the stem A and thecentral portion 0 of the cutter E being provided with registeringinclined grooves forming,\vhen brought togetheigan inclined socket, theinclined bar E seated in said socket and provided with the point F andthe pins or screws K and L for securing the parts together,substantially as described.

ALFRED V. COOPER. Witnesses:

L. M. NEELY, Jr., J. H. JORDAN.

